PlayStation Development Network

Wartris is a Tetris variant and homebrew game for PS1. Developed in 1999 by Pissteam a former group of the Playstation One demoscene. Although Wartris can be played in single-player mode, the focus is on two-player battle mode. The object of the game is to force the opponent to stack up Tetrominoes beyond the top limit (Topping out). This can be done as usual by deleting the own lines or using special tools which can be used as weapons against the opponent.